NXP Semiconductors MPC5566 - Introduction

MPC5566 Microcontroller Reference Manual, Rev. 2
Freescale Semiconductor 23-1
Chapter 23
Voltage Regulator Controller (VRC) and POR Module
23.1 Introduction
The voltage regulator controller (VRC) and power-on reset (POR) module contains circuitry to control
regulation of the external 1.5 V supply used by the MPC5566. It also contains POR circuits for the 1.5 V
supply, V
DDSYN
and the V
DDE
supply that powers the RESET pad.
23.1.1 Block Diagram
The block diagram of the VRC and POR module is shown in Figure 23-1. The diagram represents the
various submodules as implemented on the device.
Figure 23-1. Voltage Regulator Controller and POR Blocks
3.3 V
POR
POR
RESET
pin
supply
1.5 V
POR
Voltage
regulator
controller
V
DDSYN
V
DDEH6
V
RCSNS
1
V
RCCTL
V
RC33
V
RCVSS
POR to
other blocks
within MCU
Functional
OR
Functional
AND
1
This is not a package pin